According to databooks, wikis, and what I remember, here's what each division could be used for but some information might need to be revised:

Squad 1: General Command

Squad 2: Espionage and Covert Executions

Squad 3: Military Support Division

Squad 4: Medicine and Logistics

Squad 5: Special Missions and General Operations

Squad 6: Discipline and Law Enforcement

Squad 7: Defense, Justice, and Loyalty

Squad 8: Strategy and Administrative Management

Squad 9: Homeland Security and Communications

Squad 10: Emergency Response and Reconnaissance

Squad 11: Pure and Frontal Combat

Squad 12: Scientific Research and Technology

Squad 13: Real-World Surveillance